Just a improved 3D-printable case for Quefrency Rev.1 done in Freecad with simplification in mind.
This case requires 12 M2 Countersink Screws with 12mm length (Head diameter(dK) of screw must be 3.8mm and countersunk length(K) must be 1.9mm).
The screws are inserted from the bottom of the case, hiding them during the daily usage.